>> >> reporter: interrupted by anti-war protesters who say u.s. drone strikes aimed at killing terrorists have killed too many innocent people. >> i speak for the mothers of the children in yemen, pakistan, somalia -- >> the outburst delayed the start of the hearing. >> all right. i'm going to ask that this room be cleared. will the capitol police please clear the room. >> with the demonstrators removed brennan went on to defend the u.s. drone program. >> the men and women of the cia are frequently asked to undertake challenging, perilless and controversial actions on behalf of the american people. >> later brennan declined to detail a report suggesting enhanced interrogation techniques some terror suspects played a key role in tracking down osama bin laden. >> there clearly were a number of things, many things that i read in that report, that were very concerning and disturbing to me. >> for their part senators pressed brennan on the cia's reluctance in their view to share information with congress. >> i feel i've been jerked around by every cia